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PHP Databases Using PHP in conjunction with databases. PHP questions not specific to databases should be directed to one of the other PHP forums.
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Old October 30th, 2006, 02:02 PM
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Default Retrieving clob oracle with php

After a search I found a few results, but none were in PHP environment.

what I'm trying to do is have a user upload a pdf file into an oracle database. (as a clob data type) I can upload no problem, but it comes time to retrive the info into a pdf file I get 2 outcomes depending on how I tamper with the php code.
1) the pdf file opens, but it's empty.
2) I get a format error and the pdf file does not open

When I check if the info is actually in oracle, everything seems to be ok at the database level. I figure I'm doing something wrong in php when I insert the data or when i'm trying to retrieve the data. I am using oracle 10g.

Any help would be greatly appreciated...


In case I lost some of you with my explanation, I am inserting a pdf file into oracle and want to retrive it in the pdf reader. Thats all...


here is the code I'm using...

Code:
// 
        // Sample form to upload and insert data into an ORACLE CLOB column 
        // using PHP's Oracle 8 API. 
        // 
        // Based on http://www.php.net/manual/en/functio...descriptor.php 
        // modified to work on CLOBs and use register_globals = Off. 
        // 
        // Before running this script, execute these statements in SQL*Plus: 
        //   drop table myclobtab; 
        //   create table myclobtab (c1 number, c2 clob); 
        // 
        // Tested with PHP 4.3.3 against Oracle 9.2 
        // 

        if (!isset($_FILES['lob_upload'])) { 
        ?> 

        <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST" enctype="multipart/form-data"> 
        Upload file: <input type="file" name="lob_upload"> 
        <input type="submit" value="Upload"> 

        </form> 

        <?php 
        } 
        else { 
          $myid = 1; // should really be a unique id e.g. a sequence number 

          $conn = OCILogon('myusername', 'mypassword', 'mydatabase'); 

          // Delete any existing CLOB so the query at the bottom 
          // displays the new data 

          $query = 'DELETE FROM MYCLOBTAB'; 
          $stmt = OCIParse ($conn, $query); 
          OCIExecute($stmt, OCI_COMMIT_ON_SUCCESS); 
          OCIFreeStatement($stmt); 

          // Insert the CLOB from PHP's temporary upload area 

          $lob = OCINewDescriptor($conn, OCI_D_LOB); 
          $stmt = OCIParse($conn, 'INSERT INTO MYCLOBTAB (C1, C2) VALUES('.$myid . ', EMPTY_CLOB()) RETURNING C2 INTO :C2'); 
          OCIBindByName($stmt, ':C2', &$lob, -1, OCI_B_CLOB); 
          OCIExecute($stmt, OCI_DEFAULT); 

          // The function $lob->savefile(...) reads from the uploaded file. 
          // If the data was already in a PHP variable $myv, the 
          // $lob->save($myv) function could be used instead. 
            if ($lob->savefile($_FILES['lob_upload']['tmp_name'])) { 
            OCICommit($conn); 
            echo "CLOB successfully uploaded\n"; 
          } 
          else { 
            echo "Could not upload CLOB\n"; 
          } 
          $lob->free(); 
          OCIFreeStatement($stmt); 

          // Now query the uploaded CLOB and display it 
          $query = 'SELECT C2 FROM MYCLOBTAB WHERE C1 = '.$myid; 
          $stmt = OCIParse ($conn, $query); 
          OCIExecute($stmt, OCI_DEFAULT); 
          OCIFetchInto($stmt, $arr, OCI_ASSOC); 
          $result = $arr['C2']->load(); 
          header("Pragma: no-cache"); 
          header('Content-type: application/pdf'); 
          header('Content-Disposition: attachment; filename="downloaded.pdf"'); 
          echo $result; 
          OCIFreeStatement($stmt); 
          OCILogoff($conn); 
        }


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